Which of the following is the connecting link between glycolysis and Krebs cycle?
1. Acetyl Co-A

2. Oxalosuccinic acid

3. Pyruvic acid

4. Citric acid 

The enzyme decarboxylase catalyses the following step

Which of the following is true regarding the given electron transport chain?
$\mathrm{CoQ}<mspace\; width="1em"></mspace>\to \mathrm{Cyt}<mspace\; width="1em"></mspace>\mathrm{c}<mspace\; width="1em"></mspace>\to \mathrm{Cyt}<mspace\; width="1em"></mspace>{\mathrm{aa}}_3\to {\mathrm{O}}_2$
$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{CoQ}<mspace\; width="1em"></mspace>\to \mathrm{Cyt}<mspace\; width="1em"></mspace>\mathrm{c}<mspace\; width="1em"></mspace>\mathrm{is}<mspace\; width="1em"></mspace>{\mathrm{H}}^{+}<mspace\; width="1em"></mspace>\mathrm{absorbing}<mspace\; width="1em"></mspace>\mathrm{site}.$
$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{aa}}_3<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>{\mathrm{O}}_2,<mspace\; width="1em"></mspace>{\mathrm{H}}^{+}<mspace\; width="1em"></mspace>\mathrm{yielding}<mspace\; width="1em"></mspace>\mathrm{site}.$
$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>\mathrm{CoQ}<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>\mathrm{Cyt}<mspace\; width="1em"></mspace>\mathrm{c}<mspace\; width="1em"></mspace>\mathrm{is}<mspace\; width="1em"></mspace>{\mathrm{H}}^{+}<mspace\; width="1em"></mspace>\mathrm{yielding}<mspace\; width="1em"></mspace>\mathrm{site}<mspace\; width="1em"></mspace>\mathrm{and}<mspace\; width="1em"></mspace>{\mathrm{aa}}_3\to {\mathrm{O}}_2<mspace\; width="1em"></mspace>\mathrm{is}<mspace\; width="1em"></mspace>{\mathrm{H}}^{+}<mspace\; width="1em"></mspace>\mathrm{absorbing}<mspace\; width="1em"></mspace>\mathrm{site}.$
$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{No}<mspace\; width="1em"></mspace>{\mathrm{H}}^{+}<mspace\; width="1em"></mspace>\mathrm{is}<mspace\; width="1em"></mspace>\mathrm{absorbed}<mspace\; width="1em"></mspace>\mathrm{or}<mspace\; width="1em"></mspace>\mathrm{released}$
$$

After glycolysis, fate of glucose in mitochondrial matrix is

1. oxidation

2. reduction

3. oxidative decarboxylation

4. hydrolysis.

Which enyme helps in transfer of phosphate group from ATP to carbohydrate?

1. Phosphate

2. ATPase

3. Phosphorylase

4. Catalase

Which one is correct sequence occuring in glycolysis?
1. G-6-P $\to$PEP $\to$3-PGAL $\to$3-PGA

2. G-6-P $\to$3-PGAL $\to$ 3-PGA $\to$PEP

3. G-6-P $\to$PEP $\to$3-PGA $\to$3-PGAL

4. G-6-P $\to$3-PGA $\to$3-PGAL $\to$PEP

In which of the following reactions of glycolysis, a molecule of water is removed from the substrate?
1. Glucose $\to$ Glucose-6-phosphate
2. Fructose-6-phosphate $\to$ Fructose-1,6 bisphosphate
3. 2-phosphoglycerate $\to$Phosphoenol pyruvate
4. Phosphoenol pyruvate $\to$Pyruvate

Aerobic respiration produces more usable chemical energy than fermentation, because fermentation involves

RQ (Respiratory Quotient) is defined as

The colour in the brown fat is due is